/Engine/Source/Runtime/MovieScene/Public/Evaluation/MovieSceneTimeWarping.h
Transforms the given range by time-warping it and figuring out if it "covered" a full loop or not. If it covered a full loop, return a full-loop range, i.e. a range that goes from StartOffset to (Length - EndOffset). If it didn't cover a full loop, return the transformed range, which should be a subset of the full loop range mentioned above.
[TRange](API\Runtime\Core\Math\TRange)< [FFrameTime](API\Runtime\Core\Misc\FFrameTime) > TransformRangeConstrained ( const [TRange](API\Runtime\Core\Math\TRange)< [FFrameTime](API\Runtime\Core\Misc\FFrameTime) > & Range ) const